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Paul Selwood

@pselwood

HPC user in the UK

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08.09.2024
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Latest posts by Paul Selwood @pselwood

He said he didn't drink it cos he is coeliac which is a pretty good reason in my book. A celebration shouldn't be leaving you sick!

01.03.2026 21:52 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

As has Oliver Cromwell

26.02.2026 14:35 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The Era of Tape has never left us!

16.02.2026 17:14 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

For me being able to spell exsanguinated comes as a result of having a choir master who is obsessed with us singing every arrangement of "Ave Verum Corpus" going. And there are *lots* of them!

27.01.2026 14:52 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Looking pretty spectacular over North Dartmoor at the moment. Lights stretching across the whole sky.

19.01.2026 21:58 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

V4 from "Christmas Carols Ancient and Modern",
W. B. Sandys (1833).

fear not, then said the Angel,
Let nothing you affright,
This day is born a Saviour
Of virtue, power and might;
So frequently to vanquish all
The friends of Satan quite

19.12.2025 13:33 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I think it's now time to move on to later verses. Should "wind" be pronounced to rhyme with "find"? Just how much should you stress the last word in "friends of Satan quite"?

19.12.2025 11:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

What's the assumption on the power mix you are making for this? Are you thinking about a US based DC, or an Iceland one running on geothermal, or a Finnish one on hydro?

04.12.2025 07:25 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Post image

What does a β€œblend” of AI and physics mean for weather and climate modelling?

In this blog find out more about the potential future blend of AI and physics-based models, as well as steps the Met Office is taking to achieve ambitious aims.
www.metoffice.gov.uk/blog/2025/wh...

25.11.2025 14:01 πŸ‘ 17 πŸ” 1 πŸ’¬ 1 πŸ“Œ 3

Looks like anyone with tickets for day 5 will be disappointed. Heck, even those with day 3 tickets might be getting worried!

21.11.2025 09:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Have you noticed that the only ones who say that haven't actually tried the alternative? Difficult to say anything if you have tried the alternative mind you.

13.10.2025 21:50 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

And AI has been around for ages too. People have been working on e.g. image classification with neural nets for many, many years.

08.09.2025 06:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

My favourite cover of Edmund Fitzgerald, mostly cos I'm a sucker for dynamic contrast. youtu.be/8JLU9wXu-4M?...

17.08.2025 10:37 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

You didn't take the cargo bike then?

07.08.2025 17:46 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Met Office Careers

The Met Office are recruiting for an entry level role in HPC Optimisation. careers.metoffice.gov.uk/join-us/sear...

07.08.2025 16:00 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

"A supercomputer is a device for turning a compute bound problem into an I/O bound problem" (Ken Batcher) has had a large dollop of truth in my domain for many years and still does in your scenario.

07.08.2025 15:32 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

First, catch your moose ...

06.07.2025 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I would have said Cray 1, but who would have had 3 of them?

25.06.2025 17:12 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Many thanks to the @gwr.com driver on the Exeter to Okehampton line tonight. Hit a landslip in foul weather and, despite being rather shaken by the experience, managed to get us safely to our destination. Top work!

13.06.2025 22:21 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Aw. What cute wee coo beasties!

03.06.2025 17:32 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

A bit of all of them. As a computational scientist, I care about the science being done and the subsequent societal impact. As an RSE I care about the trustability and efficiency of code used to achieve this. As an HPC person I want to have the best system to be able to do all the above well.

29.03.2025 09:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Met Office Careers

Fancy working on improving computational performance of weather and climate codes? The Met Office has vacancies. careers.metoffice.gov.uk/join-us/sear... careers.metoffice.gov.uk/join-us/sear...

24.02.2025 10:38 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

I get all the answers about "no queues", but thinking a bit broader I'd say "no surprises". i.e. I get the results, performance and queuing I expect. I can plan my work with this. Lots of implications from this for software stack management, capacity planning etc.

15.01.2025 19:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Or a cluster of 5, "hand"!

08.01.2025 07:29 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

What a difference a few hours make. Now it is showing green grass and mist with no hint of the white stuff.

05.01.2025 09:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

HPC folks giving an HPC answer...

28.12.2024 19:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Nah. My first computer looked more like a jumped up calculator - Sinclair zx81

27.12.2024 08:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

if ... # end if ?

Parser error!

05.12.2024 19:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Was that the one where I got a briefing at a sticky bar with an ice machine grinding away making it difficult to hear anyone. AMD had a few years of "interesting" briefing venues IIRC.

30.11.2024 09:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Ah, the Bourbaki theory of guru.

25.11.2024 19:18 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0